Only the fortuitous arrival of French reinforcements under Masséna restored the line.
Their retreat left a serious gap in the centre of the French line, which was only filled by the fortuitous arrival of a line infantry company.
Not to mince words, your fortuitous arrival will seal coelura's protection.
The situation is saved by the fortuitous arrival of a stranger from Andros.
The spider had been a fortuitous arrival.
Tyre was saved by the fortuitous arrival of Conrad of Montferrat.
Had it not been for the fortuitous arrival of Doctors Borodov and Ursis, you would likely now be in a morgue.
(Donald Kagan has asserted that these apparently fortuitous arrivals must have been the result of planning by Demosthenes.)
Emma infers that her fortuitous arrival was divine intervention, and sets about trying to rescue Charlie.
Their fortuitous arrival in this deeply sensuous place helped foster a naturalistic approach to landscape and dance.